Align input memory format and grad memory format for GroupNorm backward (#92668)
Fixes the skipped part of the test on https://github.com/pytorch/pytorch/pull/92671. Align the input memory format and the grad memory format for GroupNorm backward.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/92668
Approved by: https://github.com/jgong5, https://github.com/malfet
